Fire up and Work up

Fire up verb - To rouse to strong feeling or action.

Work up and fire up are semantically related. in encourage topic. In some cases you can use "Work up" instead a verb "Fire up", when it comes to topics like influence, inspire, offend, excite.

Work up verb - To produce or bring about especially by long or repeated effort.

Fire up and work up are semantically related. Sometimes you can use "Fire up" instead a verb "Work up".